A term used to describe a male who lacks basic male qualities or who behaves more like a female. This includes wearing tight clothing, wearing pink, lack of physical muscularity, weakness, using words such as omg, is unable to perform basic male tasks such as fixing a car or a sink, or is unable to assemble things. A weenie is also a man who overreacts in times of crisis or who is worthless during a disaster, such as an earhquake, a fire, or a hurricane.

I can't believe Justin can't change his car's oil!" "He is such a weenie.